<?php // $Id: edit_statement_save.class.php,v 1.4 2007/10/10 05:25:20 nicolasconnault Exp $

///////////////////////////////////////////////////////////////////////////
//																	   //
// NOTICE OF COPYRIGHT												   //
//																	   //
// Moodle - Modular Object-Oriented Dynamic Learning Environment		 //
//		  http://moodle.com											//
//																	   //
// Copyright (C) 1999 onwards Martin Dougiamas		http://dougiamas.com  //
//		   (C) 2001-3001 Eloy Lafuente (stronk7) http://contiento.com  //
//																	   //
// This program is free software; you can redistribute it and/or modify  //
// it under the terms of the GNU General Public License as published by  //
// the Free Software Foundation; either version 2 of the License, or	 //
// (at your option) any later version.								   //
//																	   //
// This program is distributed in the hope that it will be useful,	   //
// but WITHOUT ANY WARRANTY; without even the implied warranty of		//
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the		 //
// GNU General Public License for more details:						  //
//																	   //
//		  http://www.gnu.org/copyleft/gpl.html						 //
//																	   //
///////////////////////////////////////////////////////////////////////////

/// This class will save the changes performed to the name and comment of
/// one statement

class edit_statement_save extends XMLDBAction {

	/**
	 * Init method, every subclass will have its own
	 */
	function init() {
		parent::init();

	/// Set own custom attributes

	/// Get needed strings
		$this->loadStrings(array(
			'administration' => ''
		));
	}

	/**
	 * Invoke method, every class will have its own
	 * returns true/false on completion, setting both
	 * errormsg and output as necessary
	 */
	function invoke() {
		parent::invoke();

		$result = true;

	/// Set own core attributes
		$this->does_generate = ACTION_NONE;
		//$this->does_generate = ACTION_GENERATE_HTML;

	/// These are always here
		global $CFG, $XMLDB;

	/// Do the job, setting result as needed

	/// Get parameters
		$dirpath = required_param('dir', PARAM_PATH);
		$dirpath = $CFG->dirroot . stripslashes_safe($dirpath);

		$statementparam = strtolower(required_param('statement', PARAM_CLEAN));
		$name = trim(strtolower(required_param('name', PARAM_CLEAN)));
		$comment = required_param('comment', PARAM_CLEAN);
		$comment = stripslashes_safe($comment);

		$editeddir =& $XMLDB->editeddirs[$dirpath];
		$structure =& $editeddir->xml_file->getStructure();
		$statement =& $structure->getStatement($statementparam);

		$errors = array();	/// To store all the errors found

	/// If there is one name change, do it, changing the prev and next
	/// atributes of the adjacent tables
		if ($statementparam != $name) {
			$statement->setName($name);
			if ($statement->getPrevious()) {
				$prev =& $structure->getStatement($statement->getPrevious());
				$prev->setNext($name);
				$prev->setChanged(true);
			}
			if ($statement->getNext()) {
				$next =& $structure->getStatement($statement->getNext());
				$next->setPrevious($name);
				$next->setChanged(true);
			}
		}

	/// Set comment
		$statement->setComment($comment);

	/// Launch postaction if exists (leave this here!)
		if ($this->getPostAction() && $result) {
			return $this->launch($this->getPostAction());
		}

	/// Return ok if arrived here
		return $result;
	}
}
?>
